Reply to Objection 2. The sacrament of Matrimony, like that of Penance, is perfected by the act of the recipient. Wherefore just as Penance has no other matter than the sensible acts themselves, which take the place of the material element, so it is in Matrimony.
Sensible acts = the matter of both Penance and Matrimony - St. Thomas Aquinas, the Universal Doctor of the Church
The difference is that the Priest is the minister or source of absolution, whereas the minister or source of the Sacrament of Matrimony is the spouses themselves (De Fide dogma, btw). They confer marriage on each other, by virtue of their baptism, which is unique compared to the other 6 sacraments. Which explains why in Matrimony form and matter coincide in the actual vow (the statement of contract) itself together. The form is the vow. The minister is the man and woman. And the matter is their intention actualized in the act of taking the vow (as a "sensible act" according to the Angelic Doctor).
In other words, the vow itself, i.e. the "I Do" is the FORM, whereas the actual vocalization or writing down of the vow is the material, sensible act (MATTER). Christ chose to institute it this way, unlike Baptism that needs the substance of water, or the Eucharist that needs the substance of bread/wine. The sacramental sign of matrimonial grace being given by God is the couple taking the vow. Period. Christ made it that way.
He said in Reply #35, arguing with Wilson: "But, I will say that I am not the usurper in this conversation.
I am basing my opinion off of scripture and tradition, and in conformity with both. The pope is not "tradition", and the probabil(ior)ists who seek to replace
the fathers of the church, who in a very real way gave us scripture(st. jerome), flooding our literature with errors(to the right and to the left) do not constitute "scripture".
Unless he can show how the Popes are wrong from the Fathers, Scripture, and Tradition, then Phillip's argument falls flat on its face. I rest my case.